Saif Ali Khan is often described by his colleagues as an avid reader. Actor Kalki Koechlin is also known to be a bibliophile, and generally reads whenever she gets some time off since it helps her with her writing. So while Kalki was shooting for a few portions of Happy Ending in US along with Saif, they discovered their common liking for books. Since Saif has a huge library at home, he recommended a few books to his new co-star and she immediately ordered them!